Change in coreboot[master]: drivers/intel/dptf: Add OEM variables support

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Justin TerAvest, Sumeet R Pawnikar, Todd Broch, Aaron Durbin, Patrick Rudolph, Karthik Ramasubramanian.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50127 )

Change subject: drivers/intel/dptf: Add OEM variables support
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Patch Set 8:

(2 comments)

File src/drivers/intel/dptf/dptf.c:

https://review.coreboot.org/c/coreboot/+/50127/comment/604a361b_8bb0a436 
PS8, Line 126: dptf_device_hid
Just double checking this device should use the same _HID as the DPTF device? I don't think I saw anything mentioned in the BWG.

File src/include/acpi/acpigen_dptf.h:

https://review.coreboot.org/c/coreboot/+/50127/comment/4573a2af_104332c3 
PS8, Line 117: 	uint8_t oem0;
             : 	uint8_t oem1;
             : 	uint8_t oem2;
             : 	uint8_t oem3;
             : 	uint8_t oem4;
             : 	uint8_t oem5;
             : };
suggestion: representing this as an array will simplify the code, e.g. you can use a loop to write out the values.

Also IIRC these were DWORDs (uint32_t) not BYTEs (uint8_t)?